US8413765B2 - Electronic safety system for an elevator having a bus and safety circuit - Google Patents

Electronic safety system for an elevator having a bus and safety circuit Download PDF

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Publication number
US8413765B2
US8413765B2 US12/855,986 US85598610A US8413765B2 US 8413765 B2 US8413765 B2 US 8413765B2 US 85598610 A US85598610 A US 85598610A US 8413765 B2 US8413765 B2 US 8413765B2
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Prior art keywords
controller
safety
elevator car
motor
elevator
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US12/855,986
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US20110036668A1 (en
Inventor
Christoph Stratmann
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KA Schmersal Holding GmbH and Co KG
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KA Schmersal Holding GmbH and Co KG
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Application filed by KA Schmersal Holding GmbH and Co KG filed Critical KA Schmersal Holding GmbH and Co KG
Assigned to K.A. SCHMERSAL HOLDING GMBH & CO. KG reassignment K.A. SCHMERSAL HOLDING GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STRATMANN, CHRISTOPH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22—Operation of door or gate contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions

Definitions

  • the invention relates to safety systems for elevators.
  • EP 1 159 218 B1 discloses an electronic safety system for an elevator in which safety shut-off is performed when an unsafe state is determined.
  • the electronic safety system comprises a safety control device and a communication bus which allows control and data signals to be interchanged between a control device based on a microprocessor and various components which comprise bus nodes.
  • the bus nodes are in a form such that they form an interface for sensors, contacts and switches.
  • a safety control device processes the data received from the bus nodes and determines whether there is an unsafe state. In the event of an unsafe state, the safety control device sends a stop signal to the drive and brake unit of the elevator, with a status signal which indicates the unsafe state also being sent to the control device.
  • the control device of the elevator is not intended to process any information from the bus nodes, but rather the control device actually obtains the processed information from the bus nodes from the safety control device in order to allow a faster reaction by the control device of the elevator.
  • the safety control device undertakes the safety tasks on its own and is assigned an elementary role.
  • a safety component such as a safety controller is relieved of load by virtue of the controller of the elevator indeed not obtaining from the safety controller the notification that shut-off or transfer to a safe state is or has been performed for a possible hazard potential.
  • FIG. 1 schematically shows a block diagram of the drive of an elevator car.
  • FIG. 1 shows a block diagram of an elevator.
  • a controller 1 is provided for a schematically shown elevator car denoted by 2 .
  • a motor 21 for driving the elevator car 2 is coupled to a bus 3 by means of a frequency converter 20 .
  • the controller 1 communicates via the bus 3 by means of bus nodes with components which, by way of example, are indicated as a floor level switch 4 , door contact 5 , command transmitter 6 and safe actuator 7 for a door motor 8 of the elevator car 2 .
  • the controller 1 receives signals from the components via the bus 3 by means of the bus nodes, which form an interface for the components, such as the request for a journey to a particular floor level via the command transmitter 6 in the elevator car 2 .
  • signals are obtained from floor level switches 4 which allow inferences about the floor level on which the elevator car 2 is situated.
  • the door contacts 5 provide a signal regarding whether the door of the relevant floor level is closed or open.
  • the door contact 5 ′ provides a signal regarding whether the door of the elevator car 2 is closed or open.
  • the safe actuator 7 is used to drive the door motor 8 of the elevator car 2 , which door motor can be controlled by the controller 1 by means of appropriate signals which are sent via the bus 3 .
  • At least two ultrasound position systems or USP systems 9 or a two-channel USP system is/are provided which each use ultrasound to ascertain the position of the elevator car 2 in the elevator shaft.
  • the USP systems 9 used are preferably systems from the Schmersal company, the operation of which is described in the product catalogue “Aufzugsschalttechnik-Avemzugs-Positionssystem USP” [Elevator switchgear-elevator position system USP] dated 31 Oct. 2007.
  • the two USP systems 9 or the one two-channel USP system allow(s) redundant ascertainment of the position, which meets stringent safety requirements by comparing the position of the elevator car 2 as ascertained by the two USP systems 9 or the position of the elevator car 2 as ascertained by the one two-channel USP system.
  • the position of the elevator car 2 ascertained over time can be used by the two USP systems 9 or the one two-channel USP system to determine the speed of the elevator car 2 in the elevator shaft as a derivation of the local operation of the elevator car 2 in the elevator shaft on the basis of time. It goes without saying that it is also possible to use more than two USP systems 9 . With two, however, the requisite redundancy is already obtained. Similarly, a two-channel USP system likewise provides the redundancy. In the case of the two-channel USP system, for example, it is possible to use a transmitter with two receivers and corresponding two channels.
  • the bus 3 has a safety controller 10 coupled to it as Can safety controller, which is able to receive the signals from floor level switch 4 , door contact 5 , 5 ′, command transmitter 6 , safe actuator 7 , door motor 8 and USP system 9 via the bus 3 .
  • the floor level switch 4 , door contact 5 , 5 ′, command transmitter 6 , safe actuator 7 and USP system 9 can to this extent be called sensors.
  • the controller 1 is connected to a safety circuit 11 which the safety controller 10 can open using a (safety) switch 12 .
  • the safety controller 10 monitors the safety operation of the elevator. If the safety controller 10 determines an unsafe state, such as the fact that the door contact 5 ′ is indicating that the door of the elevator car 2 is open while travelling between two floor levels, the (safety) switch 12 is opened and the elevator shut down or put into a safe state. Opening the safety circuit 11 results in operation of the (safety) switch 22 , which switches off the motor 21 .
  • the device 13 for monitoring the speed of the elevator car 2 may be implemented independently of the USP systems 9 or by the latter.
  • the limit switch(es) 15 may be implemented independently of the USP systems 9 or the two-channel USP system or by the latter.
  • the controller 1 receives from the safety circuit 11 the acknowledgement that the safety circuit 11 has been opened and the (safety) switch 22 has been operated to stop the motor 21 .
  • a means is provided which reports the open safety circuit 11 to the controller 1 .
  • This means may be implemented by the (safety) switch 22 , for example.
  • provision may be made for the controller 3 to evaluate the information from the components, such as floor level switch 4 , door contact 5 , command transmitter 6 , safe actuator 7 , door motor 8 and USP system 9 , and to determine that shut-off needs/needed to be performed by the safety controller 10 . Provision may also be made for the safety controller 10 to forward the signals received from the components to the controller 1 .
  • the controller 1 can evaluate signals from the individual components connected to the bus nodes in order to provide an improved diagnosis and maintenance opportunity.
  • the safety controller 10 can ascertain the position of the elevator car 2 in the elevator shaft redundantly by virtue of the two USP systems 9 connected to the bus 3 or by virtue of the one two-channel USP system.
  • a speed information item for the elevator car 2 may be able to be determined by the safety controller 10 from the two USP systems 9 or the one two-channel USP system redundantly so that it is possible to “catch up” in the region of the door zones of the elevator car 2 , i.e. the safety controller 10 provides the safe actuator 7 on the elevator car 2 with an enable signal in the region of the door zones so that the door motor 8 can be operated in the region of the door zone. This allows the operation of the door zone monitoring to be integrated in the safety controller 10 .

Landscapes

  • Indicating And Signalling Devices For Elevators (AREA)
  • Elevator Door Apparatuses (AREA)
  • Elevator Control (AREA)
US12/855,986 2009-08-14 2010-08-13 Electronic safety system for an elevator having a bus and safety circuit Active 2031-06-28 US8413765B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009037347 2009-08-14
DE102009037347A DE102009037347A1 (de) 2009-08-14 2009-08-14 Elektronisches Sicherheitssystem für einen Aufzug
DE102009037347.0 2009-08-14

Publications (2)

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US20110036668A1 US20110036668A1 (en) 2011-02-17
US8413765B2 true US8413765B2 (en) 2013-04-09

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US12/855,986 Active 2031-06-28 US8413765B2 (en) 2009-08-14 2010-08-13 Electronic safety system for an elevator having a bus and safety circuit

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US (1) US8413765B2 (ja)
EP (1) EP2284110B1 (ja)
JP (1) JP5300802B2 (ja)
DE (1) DE102009037347A1 (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120073909A1 (en) * 2009-06-22 2012-03-29 Mitsubishi Electric Corporation Elevator device
US20130056309A1 (en) * 2011-09-06 2013-03-07 Cedes Ag Safety apparatus and elevator apparatus
US20130146399A1 (en) * 2011-12-12 2013-06-13 Cedes Ag Safety apparatus, drive apparatus and elevator apparatus
US20130146398A1 (en) * 2011-12-12 2013-06-13 Cedes Ag Safety apparatus and elevator apparatus
US20160033577A1 (en) * 2013-02-12 2016-02-04 Inventio Ag Safety circuit monitoring using alternating voltage
US9371210B2 (en) * 2010-09-13 2016-06-21 Otis Elevator Company Elevator safety system having multiple buses
US20160221793A1 (en) * 2011-12-12 2016-08-04 Cedes Ag Safety apparatus for an elevator apparatus and a drive apparatus thereof
US10221040B2 (en) * 2016-08-18 2019-03-05 Yoram Madar Elevator brake monitoring and control
US10239729B2 (en) * 2013-12-09 2019-03-26 Inventio Ag Safety circuit for an elevator system
US10315886B2 (en) 2016-04-11 2019-06-11 Otis Elevator Company Electronic safety actuation device with a power assembly, magnetic brake and electromagnetic component
US10364127B2 (en) * 2013-12-18 2019-07-30 Inventio Ag Elevator installation safety system and method of checking same
US10450164B2 (en) * 2016-05-11 2019-10-22 Kone Corporation Arrangement for releasing the operating brake of an elevator
US20190389694A1 (en) * 2018-06-22 2019-12-26 Otis Elevator Company Elevator system
US10538414B2 (en) * 2015-06-15 2020-01-21 Mitsubishi Electric Corporation Elevator safety system
US11078045B2 (en) * 2018-05-15 2021-08-03 Otis Elevator Company Electronic safety actuator for lifting a safety wedge of an elevator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122474B (fi) * 2010-12-01 2012-02-15 Kone Corp Hissin turvakytkentä sekä menetelmä hissin turvakytkennän toiminnallisen poikkeaman tunnistamiseksi
WO2016062686A1 (de) 2014-10-21 2016-04-28 Inventio Ag Aufzug mit einem dezentralen elektronischen sicherheitssystem
ES2844381T3 (es) 2017-05-17 2021-07-22 Kone Corp Un procedimiento y sistema para generar datos de mantenimiento de un sistema de puertas de ascensor

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WO2008081074A1 (en) 2007-01-03 2008-07-10 Kone Corporation Elevator safety device
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US7533763B2 (en) * 2005-02-04 2009-05-19 Kone Corporation Safety device, safety system, and method for supervising safety of an elevator system
WO2009073025A1 (en) 2007-12-05 2009-06-11 Otis Elevator Company Control strategy for operating two elevator cars in a single hoistway
US20100038185A1 (en) * 2007-04-03 2010-02-18 Kone Corporation Fail-safe power control apparatus
WO2010072658A1 (de) 2008-12-26 2010-07-01 Inventio Ag Aufzugsanlage mit einer sicherheitseinrichtung
US7849975B2 (en) * 2007-01-03 2010-12-14 Kone Corporation Safety arrangement of an elevator having sensors limiting extent of elevator travel
US20120080273A1 (en) * 2009-07-02 2012-04-05 Peter Herkel Elevator rescue system
US8230977B2 (en) * 2007-08-07 2012-07-31 Thyssenkrupp Elevator Ag Distributed control system for an elevator system

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WO2010072658A1 (de) 2008-12-26 2010-07-01 Inventio Ag Aufzugsanlage mit einer sicherheitseinrichtung
US20120080273A1 (en) * 2009-07-02 2012-04-05 Peter Herkel Elevator rescue system

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120073909A1 (en) * 2009-06-22 2012-03-29 Mitsubishi Electric Corporation Elevator device
US9371210B2 (en) * 2010-09-13 2016-06-21 Otis Elevator Company Elevator safety system having multiple buses
US8899383B2 (en) * 2011-09-06 2014-12-02 Cedes Ag Elevator door monitor and drive safety apparatus
US20130056309A1 (en) * 2011-09-06 2013-03-07 Cedes Ag Safety apparatus and elevator apparatus
US9004230B2 (en) * 2011-09-06 2015-04-14 Cedes Ag Switching device and sensor in a circuit with improved detection of switching state
US20160221793A1 (en) * 2011-12-12 2016-08-04 Cedes Ag Safety apparatus for an elevator apparatus and a drive apparatus thereof
US9309090B2 (en) * 2011-12-12 2016-04-12 Cedes Ag Safety apparatus for an elevator apparatus and a drive apparatus thereof
US20130146398A1 (en) * 2011-12-12 2013-06-13 Cedes Ag Safety apparatus and elevator apparatus
US20130146399A1 (en) * 2011-12-12 2013-06-13 Cedes Ag Safety apparatus, drive apparatus and elevator apparatus
US10227208B2 (en) * 2011-12-12 2019-03-12 Cedes Ag Safety apparatus for an elevator
US8820482B2 (en) * 2011-12-12 2014-09-02 Cedes Ag Elevator monitor and drive safety apparatus
US20160033577A1 (en) * 2013-02-12 2016-02-04 Inventio Ag Safety circuit monitoring using alternating voltage
US10073140B2 (en) * 2013-02-12 2018-09-11 Inventio Ag Safety circuit monitoring using alternating voltage
US10239729B2 (en) * 2013-12-09 2019-03-26 Inventio Ag Safety circuit for an elevator system
US10364127B2 (en) * 2013-12-18 2019-07-30 Inventio Ag Elevator installation safety system and method of checking same
US10538414B2 (en) * 2015-06-15 2020-01-21 Mitsubishi Electric Corporation Elevator safety system
US10315886B2 (en) 2016-04-11 2019-06-11 Otis Elevator Company Electronic safety actuation device with a power assembly, magnetic brake and electromagnetic component
US10450164B2 (en) * 2016-05-11 2019-10-22 Kone Corporation Arrangement for releasing the operating brake of an elevator
US10221040B2 (en) * 2016-08-18 2019-03-05 Yoram Madar Elevator brake monitoring and control
US11078045B2 (en) * 2018-05-15 2021-08-03 Otis Elevator Company Electronic safety actuator for lifting a safety wedge of an elevator
US20190389694A1 (en) * 2018-06-22 2019-12-26 Otis Elevator Company Elevator system

Also Published As

Publication number Publication date
JP2011037635A (ja) 2011-02-24
EP2284110B1 (de) 2013-06-26
EP2284110A1 (de) 2011-02-16
JP5300802B2 (ja) 2013-09-25
DE102009037347A1 (de) 2011-02-17
US20110036668A1 (en) 2011-02-17

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